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Printers designed for point-of-sale terminal application usually involve a continuous-receipt paper-handling mechanism. Customer receipts are usually torn off and presented to the customer.
English (United States)
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Adjustable-Width Paper Guillotine Mechanism
Printers designed for point-of-sale terminal application usually involve a
continuous-receipt paper-handling mechanism. Customer receipts are usually
torn off and presented to the customer.
A guillotine knife assembly may be utilized where more accurate cut-off is
desired. This reduces pulling the paper off the feed roll or over-tensioning the
paper web, causing jams or misfeeding in the mechanisms. However, it is not
desired to totally cut off some receipts since they may drop or be lost. The
adjustable guillotine mechanism permits cutting off the receipt from 100% to
about 90% of its width in adjustable steps selected by the operator. The small
portion of uncut receipt paper serves to hold the receipt in place until the operator
tears off the small portion remaining. Fig. 1 illustrates an oblique pictorial
schematic of the back side of the mechanism. A stationary guillotine blade 1 is
positioned above a feed slot 2 and is attached to a slide mechanism that will be
described later. The slide mechanism has a base plate 4 provided with slots 5
fitting over studs 6 and retained by retaining washer 7.
The base 4 may be reciprocated back and forth along the direction of the slots 5,
carrying with it the stationary blade 1 and a movable blade 3 (not shown). A
series of serrations 8 in the bottom of slide base 4 interact with a pawl 9 that is
spring biased by spring 10 pushing against stop 11 to releasably hold the slide